Need help with my Satoh Beaver

[BigTom26679]

I bought a 1980 Satoh Beaver S370D The man I bought it from says it's a 17HP However the book says 15HP/17HP So does anyone know what it may be?

 

[Mundy]

Big Tom.
I also have a 1979 or 1980 S370D.
Mine is 2 cylinder 15HP. I believe the 373 had a 3 cylinder 18HP engine.
I have found it to be a very powerful tractor for its size. I tend to run out of traction before power. I have managed to stall it using the box blade a few times but it really takes alot to do that.

A few weeks ago I spread and graded 60 yards of limestone creating a new side drive to the back yard on my property. The little 2 cylinder handled everything I asked of it.

Here is a photo of it and I spreading one of the 3 piles:

 

[TractorRob]

...the book says 15HP/17HP So does anyone know what it may be?

15HP at the PTO, 17 engine HP.